<template>
	<view>
		<view class="search-box">
			<uni-search-bar @input="input" :cancel-button="none" :radius="100">
			</uni-search-bar>
		</view>
		
		<!--搜索结果展示-->
		<view class="sugg-list" v-if="searchResults.length!==0">
			<view class="sugg-item" v-for="(item,i) in searchResults" :key="i" @click="gotoDetail(item)">
				<view class="goods-name" >{{item.goods_name}}</view>
				<uni-icons type="arrowright" size="16"></uni-icons>
			</view>
		</view>
		
		<!--搜索历史-->
		<view class="history-box" v-else>
			<!--标题区域-->
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons type="trash" size="17" @click="clean">
				</uni-icons>
			</view>
			<!--列表区域-->
			<view class="history-list">
				<uni-tag class="history-list-tag" :text="item" v-for="(item,i) in histories" :key="i" @click="gotoGoodsList(item)"
				custom-style="background-color: #e8e7e8; color: #000000;border:none;margin-top:5px"></uni-tag>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer:null,
				kw:'',
				searchResults:[],
				historyList:[]
			};
		},
		onLoad(){
			this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
		},
		methods:{
			input(e){
				// console.log(e)
				clearTimeout(this.timer)
				this.timer = setTimeout(()=>{
					this.kw=e
					console.log(this.kw)
					this.getSearchList()
				},500)
			},
			async getSearchList(){
				//判断搜索关键词是否为空
				if(this.kw===''){
					this.searchResults=[]
					
					return
				}
				const {data:res} = await uni.$http.get('/api/public/v1/goods/qsearch',{query:this.kw})
				if(res.meta.status!==200) return uni.$showMsg()
				this.searchResults=res.message
				
				this.saveSearchHistory()
			},
			gotoDetail(item){
				uni.navigateTo({
					url:'/subpkg/goods_detail/goods_detail?goods_id='+ item.goods_id
				})
			},
			saveSearchHistory(){
				// this.historyList.push(this.kw)
				const set = new Set(this.historyList)
				set.delete(this.kw)
				set.add(this.kw)
				
				this.historyList=Array.from(set)
				
				//将搜索历史存储到本地
				uni.setStorageSync('kw',JSON.stringify(this.historyList))
			},
			clean(){
				this.historyList=[]
				uni.setStorageSync('kw','[]')
			},
			gotoGoodsList(item){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?query=' + this.kw
				})
			}
		},
		computed:{
			histories(){
				return [...this.historyList].reverse()
			}
		}
		
	}
</script>

<style lang="scss">
.search-box{
	position:sticky;
	top:0;
	z-index: 999;
}

.sugg-list{
	padding:0 5px;
	
	.sugg-item{
		display: flex;
		align-items: center;
		justify-content: space-between;
		font-size:12px;
		padding:13px 0;
		border-bottom: 2px solid #efefef;
		.goods-name{
			//文字不许换行，单行文本
			white-space: nowrap;
			//溢出部分隐藏
			overflow: hidden;
			text-overflow: ellipsis;
			
		}
	}
}

.history-box{
	padding:0 5px;
	.history-title{
		display: flex;
		justify-content: space-between;
		height:40px;
		align-items: center;
		font-size: 13px;
		border-bottom: 2px solid #efefef;
		margin-bottom: 5px;
		.history-list{
			display: flex;
			flex-wrap: wrap;
			
			
		}
	}
}
</style>
